feat: improved PayPal recurring payment confirmation
Changes made across multiple files involving the recurring payment flow for PayPal.
- Added eventListener for successful payment message in PaymentDisplay.js.
- Updated the redirect logic in recurring/Payment.php to point to the recurring return PHP script.
- Hidden the request dump in recurringReturn.php and replaced with a cleaner page title and a script to handle window opening events.
- The BillingAgreements script gets URL for return directly from the host rather than using Gateway method calls.
- Applied various minor code styling corrections.
- Payment as Popup